Abstract

A new state parameter that is capable of characterizing the mechanical properties of cement-treated clays with different mixing proportions, curing time, and stress conditions is developed in this study. The development is conducted by combining the effect of stress level based on the critical state theory with the effective void ratio. Based on the experimental data of cement-treated Bangkok clay performed in this study together with those of cement-treated Singapore marine and Ariake clays reported in previous studies, the analyses reveal that the state parameter is proven to be an efficient parameter for characterizing the mechanical properties of cement-treated clays with different base clays under various mixing proportions and curing times tested under various stress conditions. Furthermore, empirical equations to assist the establishment of the effective void ratio on the critical state locus from the plastic limit value of the base clay are suggested based on regression analyses. The state parameter can thus be computed and the engineers can preliminarily estimate the mechanical properties of cement-treated clay in the planning stage.

摘要

本研究开发了一种新的状态参数，该参数能够表征具有不同混合比例、养护时间和应力条件的水泥处理粘土的力学性能。将基于临界状态理论的应力水平的影响与有效空隙率相结合进行开发。根据本研究中水泥处理的曼谷粘土以及先前研究报告的水泥处理的新加坡海洋和有明粘土的实验数据，分析表明状态参数被证明是表征力学的有效参数水泥的性质-在各种应力​​条件下测试不同混合比例和固化时间的不同基础粘土处理过的粘土。此外，基于回归分析，建议建立经验方程，以帮助从基础粘土的塑性极限值建立临界状态轨迹上的有效空隙率。这样就可以计算出状态参数，工程师可以在规划阶段初步估计水泥处理粘土的力学性能。